P8.08 A METHOD COMPARISON OF CENTRAL BLOOD PRESSURE MEASUREMENTS BY PULSECOR AND SPHYGMOCOR DEVICES
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Background: Estimated aortic (or central) systolic pressure (cSBP) differs from peripheral pressure and may be a better predictor of cardiovascular events. SphygmoCor® (AtCor, Sydney, Australia) uses applanation tonometery to derive cSBP by application of a generalised transfer function to radial pulse waveforms. PulseCor® (PulseCor, Auckland, New Zealand) is a new device that estimates cSBP from suprasystolic brachial cuff waveforms. We compared blood pressures measured by both devices.
Methods: 30 individuals (67.2±5yrs) underwent consecutive radial (SphygmoCor) and brachial (PulseCor) waveform measures. Method comparison was performed by Bland Altman analysis in Stata 11.0.
Results: Measurements made by the two devices were similar (Table 1). cSBP estimated by PulseCor tended to be higher than SphygmoCor, although the difference was within the American Association for the Advancement of Medical Instrumentation (AAMI) standards (< 5mmHg and SDdiff was <8mmHg). Bland Altman analysis showed no systematic bias between devices across the range of blood pressures measured.
| Variable | PulseCor | SphygmoCor | Difference | LOA |
|---|---|---|---|---|
| Brachial SBP, mmHg | 140.7 (13.1) | 140.5 (13.0) | 0.2 (1.4) | −2.4, 2.9 |
| Brachial DBP, mmHg | 84.7 (9.3) | 84.7 (9.3) | 0.0 (0.0) | 0.0, 0.0 |
| HR, bpm | 65.4 (16.1) | 64.6 (14.3) | 0.8 (5.7) | −10.3, 11.9 |
| Central SBP, mmHg | 135.0 (12.8) | 131.4 (13.0) | 3.6 (4.3) | −4.9, 12.0 |
| Central DBP, mmHg | 85.8 (9.5) | 85.4 (9.7) | 0.3 (0.7) | −1.1, 1.7 |
DBP, diastolic blood pressure; HR, heart rate; SBP, systolic blood pressure; LOA, limits of agreement. Data are means (SD).
Conclusions: PulseCor and Sphygmocor give similar estimates of central blood pressures. The slightly higher cSBP measured by PulseCor could relate to the use of brachial rather than radial pressure to calibrate SphygmoCor.
Cite this article
TY - JOUR AU - C.M. Park AU - K. March AU - A.K. Ghosh AU - T. Tillin AU - J. Mayet AU - A. Lowe AU - N. Chaturvedi AU - A.D. Hughes PY - 2010 DA - 2010/12/02 TI - P8.08 A METHOD COMPARISON OF CENTRAL BLOOD PRESSURE MEASUREMENTS BY PULSECOR AND SPHYGMOCOR DEVICES JO - Artery Research SP - 171 EP - 171 VL - 4 IS - 4 SN - 1876-4401 UR - https://doi.org/10.1016/j.artres.2010.10.090 DO - 10.1016/j.artres.2010.10.090 ID - Park2010 ER -